April Fools!

As you may have realized, the vermin curio was an April Fools joke!
Hahaha?

But we actually have now released a special curio that you could receive
from hunting vermin! It won't happen often but rats, pigeons, weevils
and lizards will drop the occasional curio piece. Put it together and
you create a piece of cheese. You can eat the cheese and for 60 minutes,
you will notice more rats than normal in rooms (this DOES stack with
PerfectFourth). The cheese will return in 24 hours.